Infiniti FX35, FX50 (S51). Manual — part 690
P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
EC-301
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
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4.
Check the voltage between EVAP canister purge volume control solenoid valve harness connector and
ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E106, M6
• Harness connectors M116, F103
• Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
• Harness for open or short between EVAP canister purge volume control solenoid valve and ECM
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT
FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between EVAP canister purge volume control solenoid valve harness connector and
ECM harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 5.
YES-2 >> Without CONSULT-III: GO TO 6.
NO
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F104, F105
• Harness for open or short between EVAP canister purge volume control solenoid valve and ECM
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1.
Reconnect all harness connectors disconnected.
2.
Start engine.
3.
Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III. Check that engine speed var-
ies according to the valve opening.
Does engine speed vary according to the valve opening?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
EC-302, "Component Inspection"
EVAP canister purge vol-
ume control solenoid valve
Ground
Voltage
Connector
Terminal
F7
1
Ground
Battery voltage
EVAP canister purge vol-
ume control solenoid valve
ECM
Continuity
Connector
Terminal
Connector
Terminal
F7
2
F101
21
Existed
EC-302
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace EVAP canister purge volume control solenoid valve.
7.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000005236889
1.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT-III
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
4.
Turn ignition switch ON.
5.
Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III.
6.
Touch “Qd” and “Qu” on CONSULT-III screen to adjust “PURG
VOL CONT/V” opening and check air passage continuity of
EVAP canister purge volume control solenoid valve under the
following conditions.
Without CONSULT-III
1.
Turn ignition switch OFF.
2.
Disconnect EVAP canister purge volume control solenoid valve harness connector.
3.
Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
4.
Check air passage continuity of EVAP canister purge volume
control solenoid valve under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace EVAP canister purge volume control solenoid
valve
Condition
(PURG VOL CONT/V value)
Air passage continuity
between (A) and (B)
100%
Existed
0%
Not existed
JMBIA0068ZZ
Condition
Air passage continuity
between (A) and (B)
12 V direct current supply between
terminals 1 and 2
Existed
No supply
Not existed
JMBIA0068ZZ
P0447 EVAP CANISTER VENT CONTROL VALVE
EC-303
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
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P0447 EVAP CANISTER VENT CONTROL VALVE
Description
INFOID:0000000005236890
The EVAP canister vent control valve is located on the EVAP canis-
ter and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is energized.
A plunger will then move to seal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evaporative
emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the evapo-
rative emission control system is depressurized and allows “EVAP
Control System” diagnosis.
DTC Logic
INFOID:0000000005236891
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm battery voltage is more than 11 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and wait at least 8 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005236892
1.
INSPECTION START
Will CONSULT-III be used?
Will CONSULT-III be used?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT-III
1.
Turn ignition switch OFF and then ON.
2.
Select “VENT CONTROL/V” in “ACTIVE TEST” mode with CONSULT-III.
PBIB1263E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0447
EVAP canister vent con-
trol valve circuit open
An improper voltage signal is sent to ECM
through EVAP canister vent control valve.
• Harness or connectors
(The valve circuit is open or shorted.)
• EVAP canister vent control valve
EC-304
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
P0447 EVAP CANISTER VENT CONTROL VALVE
3.
Touch “ON/OFF” on CONSULT-III screen.
4.
Check for operating sound of the valve.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 3.
3.
CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect EVAP canister vent control valve harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between EVAP canister vent control valve harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E3, F1
• Harness connectors F103, M116
• Harness connectors B201, M117
• Harness for open or short between EVAP canister vent control valve and IPDM E/R
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.
CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between EVAP canister vent control valve harness connector and ECM harness con-
nector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors B201, M117
• Harness for open or short between EVAP canister vent control valve and ECM
>> Repair open circuit, short to ground or short to power in harness or connectors.
7.
CHECK RUBBER TUBE FOR CLOGGING
1.
Disconnect rubber tube connected to EVAP canister vent control valve.
2.
Check the rubber tube for clogging.
Clicking sound should be heard.
EVAP canister vent con-
trol valve
Ground
Voltage
Connector
Terminal
B253
1
Ground
Battery voltage
EVAP canister vent
control valve
ECM
Continuity
Connector
Terminal
Connector
Terminal
B253
2
M107
121
Existed
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